I'm a little confused by the proliferation of 'rescue knives' a.k.a seatbelt cutters these days. I've personally been in a rollover accident (came to rest upside down), and the seatbelt buckle let me loose without problem, as it is designed to do. As a volunteer fireman, all of the vehicle accidents I have responded to (admittedly only around 10 of them) were the same - the buckle was accessible, and unlatched without problem. How many of you have been in situations where cutting the seatbelt was the best or only option? I guess what I am asking is: as clever as these things look, how useful are they really? Especially if you have a pair of EMT shears handy?